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NAME | DESCRIPTION | FILES | SEE ALSO | ACKNOWLEDGEMENTS | COLOPHON |
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SLAPD.BACKENDS(5) File Formats Manual SLAPD.BACKENDS(5)
slapd.backends - backends for slapd, the stand-alone LDAP daemon
The slapd(8) daemon can use a variety of different backends for
serving LDAP requests. Backends may be compiled statically into
slapd, or when module support is enabled, they may be dynamically
loaded. Multiple instances of a backend can be configured, to
serve separate databases from the same slapd server.
Configuration options for each backend are documented separately
in the corresponding slapd-<backend>(5) manual pages.
config This backend is used to manage the configuration of slapd
at run-time. Unlike other backends, only a single
instance of the config backend may be defined. It also
instantiates itself automatically, so it is always present
even if not explicitly defined in the slapd.conf(5) file.
dnssrv This backend is experimental. It serves up referrals
based upon SRV resource records held in the Domain Name
System.
ldap This backend acts as a proxy to forward incoming requests
to another LDAP server.
ldif This database uses the filesystem to build the tree
structure of the database, using plain ascii files to
store data. Its usage should be limited to very simple
databases, where performance is not a requirement. This
backend also supports subtree renames.
mdb This is the recommended primary backend. This backend
uses OpenLDAP's own MDB transactional database library.
This backend also supports subtree renames.
meta This backend performs basic LDAP proxying with respect to
a set of remote LDAP servers. It is an enhancement of the
ldap backend.
monitor
This backend provides information about the running status
of the slapd daemon. Only a single instance of the monitor
backend may be defined.
ndb This backend is experimental. It uses the transactional
database interface of the MySQL Cluster Engine (NDB) to
store data. Note that Oracle, which now owns MySQL, has
withdrawn support for NDB and this backend is unlikely to
be developed any further.
null Operations in this backend succeed but do nothing.
passwd This backend is provided for demonstration purposes only.
It serves up user account information from the system
passwd(5) file.
perl This backend embeds a perl(1) interpreter into slapd. It
runs Perl subroutines to implement LDAP operations.
relay This backend is experimental. It redirects LDAP
operations to another database in the same server, based
on the naming context of the request. Its use requires
the rwm overlay (see slapo-rwm(5) for details) to rewrite
the naming context of the request. It is primarily
intended to implement virtual views on databases that
actually store data.
shell This backend executes external programs to implement LDAP
operations. It is primarily intended to be used in
prototypes.
sql This backend is experimental. It services LDAP requests
from an SQL database.
ETCDIR/slapd.conf
default slapd configuration file
ETCDIR/slapd.d
default slapd configuration directory
ldap(3), slapd-config(5), slapd-dnssrv(5), slapd-ldap(5),
slapd-ldif(5), slapd-mdb(5), slapd-meta(5), slapd-monitor(5),
slapd-ndb(5), slapd-null(5), slapd-passwd(5), slapd-perl(5),
slapd-relay(5), slapd-shell(5), slapd-sql(5), slapd.conf(5),
slapd.overlays(5), slapd(8). "OpenLDAP Administrator's Guide"
(http://www.OpenLDAP.org/doc/admin/)
OpenLDAP Software is developed and maintained by The OpenLDAP
Project <http://www.openldap.org/>. OpenLDAP Software is derived
from the University of Michigan LDAP 3.3 Release.
This page is part of the OpenLDAP (an open source implementation
of the Lightweight Directory Access Protocol) project.
Information about the project can be found at
⟨http://www.openldap.org/⟩. If you have a bug report for this
manual page, see ⟨http://www.openldap.org/its/⟩. This page was
obtained from the project's upstream Git repository
⟨https://git.openldap.org/openldap/openldap.git⟩ on 2020-12-18.
(At that time, the date of the most recent commit that was found
in the repository was 2020-12-16.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
OpenLDAP LDVERSION RELEASEDATE SLAPD.BACKENDS(5)
Pages that refer to this page: slapd.conf(5), slapd-config(5), slapd.overlays(5)
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